Summary: Proceedings of IEEE Real­Time System Symposium, Madrid, Spain, 1998 1
Integrating Multimedia Applications in Hard Real­Time Systems
Luca Abeni and Giorgio Buttazzo
Scuola Superiore S. Anna, Pisa
luca@hartik.sssup.it, giorgio@sssup.it
Abstract
This paper focuses on the problem of providing efficient
run­time support to multimedia applications in a real­time
system, where two types of tasks can coexist simultaneously:
multimedia soft real­time tasks and hard real­time tasks.
Hard tasks are guaranteed based on worst case execution
times and minimum interarrival times, whereas multimedia
and soft tasks are served based on mean parameters. The
paper describes a server­based mechanism for scheduling
soft and multimedia tasks without jeopardizing the a pri­
ori guarantee of hard real­time activities. The performance
of the proposed method is compared with that of similar
service mechanisms through extensive simulation experi­
ments and several multimedia applications have been im­
plemented on the HARTIK kernel.

Source: Abeni, Luca - Dipartimento di Ingegneria e Scienza dell'Informazione, Università di Trento

Collections: Computer Technologies and Information Sciences